Author Topic: VeloBuild VB-R-268 frame  (Read 114275 times)

Miodu

Re: VeloBuild VB-R-268 frame
« Reply #600 on: January 10, 2025, 03:25:35 PM »
Would you mind posting some photos showing this? Thanks
It's hard to post as I already use housing. Grommet is made from aluminium which is blocked by little metal inside the frame with this little screw H2. The grommet hole is too little to pass the housing so I detached from frame and drilled. After that i realize that I used a little to much torque :) So keep in mind that this screw is really really soft :)

Lumenir

Re: VeloBuild VB-R-268 frame
« Reply #601 on: January 17, 2025, 10:05:29 AM »
Anyone has a problem with saddle tilt? Sometimes after coming back from out of the saddle, saddle can tilt a bit If I don't land perfectly in the middle.
Is this normal? Any fix?
I'm using carbon rails with 9x9, but it sits really nice, 12nm

patliean1

Re: VeloBuild VB-R-268 frame
« Reply #602 on: January 17, 2025, 10:42:15 AM »
Anyone has a problem with saddle tilt? Sometimes after coming back from out of the saddle, saddle can tilt a bit If I don't land perfectly in the middle.
Is this normal? Any fix?
I'm using carbon rails with 9x9, but it sits really nice, 12nm

Yup me as well. It's why I despise single clamping designs especially if your saddle rails aren't squarely clamped in the middle to evenly distribute weight.

Since I really need a 20mm offset seatpost I had push my saddle all the back to the very limits. This is a recipe for saddle tilt slippage upwards.

RasmusWH

Re: VeloBuild VB-R-268 frame
« Reply #603 on: January 17, 2025, 02:19:14 PM »
Anyone has a problem with saddle tilt? Sometimes after coming back from out of the saddle, saddle can tilt a bit If I don't land perfectly in the middle.
Is this normal? Any fix?
I'm using carbon rails with 9x9, but it sits really nice, 12nm

This is probably my main point of criticism with this frame (worse than the Mavic speed release). Single bolt saddle clamps are the absolute worst. I've added carbon paste for increased friction and tightened the bolt as much as I dare, and the problem is for now solved - until I hit a small pothole or something.

Miodu

Re: VeloBuild VB-R-268 frame
« Reply #604 on: January 17, 2025, 04:26:26 PM »
Only chain, brake bleeding and adjust front and rear derailleur and bar tape left. Including all of this weight should be 8.2kg with basic shimano pedals (approx 350g)

Serge_K

Re: VeloBuild VB-R-268 frame
« Reply #605 on: January 18, 2025, 02:05:55 PM »

Since I really need a 20mm offset seatpost I had push my saddle all the back to the very limits. This is a recipe for saddle tilt slippage upwards.

But then while on a slow group ride bored out of your mind, you can rub yourself on that.

:D
Fast on the flat. And nowhere else.

Chiyou

Re: VeloBuild VB-R-268 frame
« Reply #606 on: January 20, 2025, 05:01:39 PM »
Any fix?

I applied Loctite 648 (retaining compound for cylindrical parts) to mine, but mainly tightened the bolt as much as I dared.

Davidhe23

Re: VeloBuild VB-R-268 frame
« Reply #607 on: January 22, 2025, 11:13:53 AM »
Hello everyone, it's the first time I've written on this forum but I've been reading you for a long time.

A few months ago I bought my VB 268 and so far I have been very happy, but after hearing some strange noises coming from the bottom bracket I have found this in it. 

I have tried to contact customer service to find out if it is safe to ride it, but they are on their holiday and there is no response.

Here are some pictures to see the possible carbon breakdown.

RasmusWH

Re: VeloBuild VB-R-268 frame
« Reply #608 on: January 22, 2025, 02:39:50 PM »
Hello everyone, it's the first time I've written on this forum but I've been reading you for a long time.

A few months ago I bought my VB 268 and so far I have been very happy, but after hearing some strange noises coming from the bottom bracket I have found this in it. 

I have tried to contact customer service to find out if it is safe to ride it, but they are on their holiday and there is no response.

Here are some pictures to see the possible carbon breakdown.

I'm afraid you might be right, it shouldn't crack like that. Is it a metal BB? It looks like it

Miodu

Re: VeloBuild VB-R-268 frame
« Reply #609 on: January 23, 2025, 12:56:48 AM »
Hello everyone, it's the first time I've written on this forum but I've been reading you for a long time.

A few months ago I bought my VB 268 and so far I have been very happy, but after hearing some strange noises coming from the bottom bracket I have found this in it. 

I have tried to contact customer service to find out if it is safe to ride it, but they are on their holiday and there is no response.

Here are some pictures to see the possible carbon breakdown.
You can also try to write to them Via instsgram

DavidG

Re: VeloBuild VB-R-268 frame
« Reply #610 on: January 23, 2025, 01:04:21 AM »
What BB did you fit there and what torque Nm did you use?

The 286 comes with a BB86 and that metal ring you have there is something I don't kind of identify as a part of a BB86 pressfit BB. What's it it?


Miodu

Re: VeloBuild VB-R-268 frame
« Reply #611 on: January 23, 2025, 02:01:50 AM »
I think that Silver ring is spacer. Probably used MTB BB or some threded Press fit like ZTTO

Davidhe23

Re: VeloBuild VB-R-268 frame
« Reply #612 on: January 23, 2025, 02:03:00 AM »
What BB did you fit there and what torque Nm did you use?

The 286 comes with a BB86 and that metal ring you have there is something I don't kind of identify as a part of a BB86 pressfit BB. What's it?


This is the sram dub BB86 PressFit axis for Crankset Force. The tightening pair I can not say, since the assembly was done in my local trek distributor, but I have to assume that it was with the best tools.

They are currently on vacation in China and I can't give more information about the case, I am waiting for a response.
« Last Edit: January 23, 2025, 02:11:48 AM by Davidhe23 »

Serge_K

Re: VeloBuild VB-R-268 frame
« Reply #613 on: January 23, 2025, 02:49:37 AM »
Hello everyone, it's the first time I've written on this forum but I've been reading you for a long time.

A few months ago I bought my VB 268 and so far I have been very happy, but after hearing some strange noises coming from the bottom bracket I have found this in it. 

I have tried to contact customer service to find out if it is safe to ride it, but they are on their holiday and there is no response.

Here are some pictures to see the possible carbon breakdown.

hard to say intelligent things without seeing the bike, but there's a good chance it's just the paint cracking, which is pretty common in high stress areas like that. There's a good chance the noises come elsewhere on the bike (see the video from phil gaimon on youtube on why the noises on your bike usually dont come from the bottom bracket (search what i just wrote you'll find the video). If the noise does indeed come from the BB, your bearings may have just died, or something got loose. Point is, there can be a dozen sources for a noise before "the frame disintegrated at the BB area", so i wouldn't worry just yet. And yes, it's chinese new year over there, so expect radio silence from them, but they're not ghosting you, they're just OOO.
Fast on the flat. And nowhere else.

DavidG

Re: VeloBuild VB-R-268 frame
« Reply #614 on: January 23, 2025, 10:14:35 AM »


This is the sram dub BB86 PressFit axis for Crankset Force. The tightening pair I can not say, since the assembly was done in my local trek distributor, but I have to assume that it was with the best tools.

They are currently on vacation in China and I can't give more information about the case, I am waiting for a response.
Yeap I googled it and now can see that is a sram dub BB86 PressFit. Fair enough.

I am in with Serge_K just wrote. It is likely to be just pain cracking which may have been there from the start. Keep us posted once you find out till then I would just ride the bike myself personally.
« Last Edit: January 23, 2025, 11:17:05 AM by DavidG »